The invention discloses a threshing and redrying processing method and relates to threshing and redrying processing, and belongs to the technical field of tobacco leaf threshing and redrying processing in tobacco industry. The method includes the following steps: after conducting secondary leaf moistening, performing gravity winnowing on all the mixed materials, such that tobacco leaves that contain stalks fall to the bottom part and continue to undergo threshing and wind separation; blowing tobacco leaves without stalks and smashed tobacco leaves to an outlet in the upper part for performing screening, the tobacco leaves without stalks obtained after the screening directly entering the step of redrying tobacco leaves, while the smashed tobacco leaves entering a smashed tobacco leaves production line. According to the invention, the method can greatly reduce smashing rate of tobacco leaves after undergoing threshing and redrying, and increases total weight of the tobacco.